Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/basewidget/ifwl_listbox.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FWL_BASEWIDGET_IFWL_LISTBOX_H_
 #define XFA_FWL_BASEWIDGET_IFWL_LISTBOX_H_
 
 #include "xfa/fwl/core/ifwl_widget.h"
 #include "xfa/fwl/core/ifwl_dataprovider.h"
 #include "xfa/fwl/core/cfwl_event.h"
 #include "xfa/fwl/core/cfwl_widgetimpproperties.h"
 
 #define FWL_CLASS_ListBox L"FWL_LISTBOX"
-#define FWL_CLASSHASH_ListBox 1777358317
 #define FWL_STYLEEXT_LTB_MultiSelection (1L << 0)
 #define FWL_STYLEEXT_LTB_Sort (1L << 1)
 #define FWL_STYLEEXT_LTB_ShowScrollBarAlaways (1L << 2)
 #define FWL_STYLEEXT_LTB_MultiColumn (1L << 3)
 #define FWL_STYLEEXT_LTB_LeftAlign (0L << 4)
 #define FWL_STYLEEXT_LTB_CenterAlign (1L << 4)
 #define FWL_STYLEEXT_LTB_RightAlign (2L << 4)
 #define FWL_STYLEEXT_LTB_MultiLine (1L << 6)
 #define FWL_STYLEEXT_LTB_OwnerDraw (1L << 7)
 #define FWL_STYLEEXT_LTB_Icon (1L << 8)
@@ skipping 86 matching lines @@
   FWL_ERR SetSelItem(FWL_HLISTITEM hItem, FX_BOOL bSelect = TRUE);
   FWL_ERR GetItemText(FWL_HLISTITEM hItem, CFX_WideString& wsText);
   FWL_ERR GetScrollPos(FX_FLOAT& fPos, FX_BOOL bVert = TRUE);
   FWL_ERR* Sort(IFWL_ListBoxCompare* pCom);
 
  protected:
   IFWL_ListBox();
 };
 
 #endif  // XFA_FWL_BASEWIDGET_IFWL_LISTBOX_H_